Exhibition stand



FIG. 1 is a front view of an exhibition stand showing my new design;

FIG. 2 is a back view thereof;

FIG. 3 is a front side view thereof;

FIG. 4 is a front side view looking down thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a backside view thereof; and,

FIG. 7 is a top view. 

The ornamental design for an exhibition stand, as shown and described. 